Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f68e8e1d79045b…

MALICIOUS

PDF

42.0 KB Created: 2020-08-18 21:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47152d4c2ac6aa37df4e4c268a1f0ab3 SHA-1: 514025c60e6a33f7bd717316b19c2763b8bd3f3f SHA-256: d3f68e8e1d79045bf39c8f21e9e20e440a348efda0d87c2fbb76fb204d501031
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link

The PDF contains a large number of external links, many of which point to a redirector service. The document body also contains a URL that appears to be a lure for installing remote support tools, likely to facilitate further compromise. The primary malicious URL identified is https://ttraff.cc/pify?keyword=install+android+studio+for+ubuntu+64+bit, which is linked to known malicious redirector infrastructure.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=install+android+studio+for+ubuntu+64+bit
    • http://files.mwsalon-dayspa.com/uploads/1/3/0/7/130739835/vupafeg.pdf
    • http://files.ncnwmemphis-shelbycounty.org/uploads/1/3/1/4/131438308/wojofowodug_kelul_sufikuj.pdf
    • http://files.turnerlaboratory.org/uploads/1/3/1/4/131453989/fatatag-pulakariv-labutu.pdf
    • http://files.cobaltcommunityresearch.org/uploads/1/3/2/7/132740234/5a51954abae.pdf
    • http://kuxuze.mybritneyspearscollection.com/uploads/1/3/1/3/131380042/3f6f38a481c0.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/26569317570.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9277/files/pazidiwit.pdf
    • https://cdn.shopify.com/s/files/1/0435/6997/1363/files/wofum.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5578/files/daxulakogaboruzepelago.pdf
    • https://cdn.shopify.com/s/files/1/0437/8876/3298/files/fundamentals_of_actuarial_mathematics_david_promislow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/movosapupetujopopikanifaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/0439/4646/files/48600970183.pdf
    • https://cdn.shopify.com/s/files/1/0435/4041/4615/files/61751636845.pdf
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/tafiwikar.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/conceptos_tradicionales_del_anlisis_econmico.pdf
    • https://cdn.shopify.com/s/files/1/0444/5965/5335/files/bomuwugira.pdf
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/59628217903.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671c.bin
d3d0f1c11fb01c192283d616eb61f24ff25ec5e65965f5a449b0bef85e0def3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x671C 5220 bytes
font_01_sfnt_off000078db.bin
2123e361de069cdfbdf681c3d492dfeb47a25da255bd58868d0fa6f6ff3e05f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x78DB 9932 bytes